Question

Name and define the different types of vascular bundles.

Answer 1

When phloem and xylem arranged in a pattern and forms four different types of vascular bundles. They are:-

1. Collateral Vascular Bundles:- When the strand of phloem is present external to the strand of xylem on the same radius side by side is known as a collateral bundle.
2. Bicollateral Vascular Bundle: -A vascular bundle with phloem situated on the peripheral and inner side of xylem is known as a bicollateral bundle.
3. Concentric Vascular Bundles:- A vascular bundle in which one type of vascular tissue surrounds the other is known as a concentric bundle.
4. Radial Vascular Bundles: -A vascular bundle, in which the primary xylem and primary phloem strands are separated from each other by nonvascular tissues and they are situated on alternate radii of an axis, is known as a radial vascular bundle or radial bundle.